The new InfoPath Client Event creates a temporary infopath file in the documentlibrary (for web forms) when the user opens the task via worklist.
If the user don't open it or submit it no form is available within the library.

But if the user don't submit the form and only close it the temporary file is still available.

My process expires after some days - but if the approver had opend the form once the file is not cleared.

In the previous release I make the document delete by my own - storing the _fileName within uploadTempInfoPathFile_ExecuteCode. But now I don't know if the file exist or not and I'm not sure if the worklist item action use the same name as available in _fileName.

Can anyone explain me, what I can do to avoid a lot of temporary files stored in the library for ever.